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Product Details

3M Marine Grade Silicone Sealant is a mildew resistant, non sagging, moisture curing silicone rubber adhesive sealant for above-waterline applications. Designed specifically for durability in the harsh marine environment, it provides non-yellowing seals that remain flexible even after years of exposure.

It adheres to and bonds bare and painted metal, glass, gelcoat, Lexan, Plexiglass, fiberglass, non-oily woods, abraded rubber, vinyl, and many plastics. Cures tack free in one hour, with full cure in 24 hrs. Use soap and water for cleanup.

Note: Silicone sealants are generally not as strong as polyurethanes. While it does have 220 psi tensile strength, evaluate project bonding and flexibility requirements beforehand.

Info & Guides

Technical Information

  • Mildew resistant
  • Flexible Polymer
  • One-part Cure
  • Excellent weathering resistance
  • High temperature resistant
  • Non-shrinking
  • Non-sagging formula

Reviews for 3M Marine Grade Silicone Sealant

1 of 1 Reviews

June 28, 2016

Yes I would buy 3M silicone again
By Rick from Bay shore, NY

Verified Purchase

Your web site is easy to use & I received the products in a short time

Bottom Line Yes, I would recommend to a friend

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